The ewiks-supplied motor switchgear is a very basic 'slam-on - slam-off' relay driven control system, where the motors are supplied with either 100% of electrical power, or none. If a more nuanced control is desired, where motors are driven with partial power, our MotorPac comprehensive motor control system should be considered.
If the mobile phone is equipped with a flashlight there will be a torch-like button at the bottom right of the screen where it can be turned on and off. If the Android level is V6.0 or higher and this is the first time it is used the Android system will ask for permission for the app to use the flashlight. This will pause the app and it must be resumed by tapping it in the Recently Used screen.
The Mover Control Buttons
The Mover Control Module
The Mobile Phone Remote Control unit requires a 12 volt power supply similar to that which powers the rest of the caravan. It draws a current of about 200mA while working. The cheapest and simplest way to supply it with power is to connect it to the caravan's battery system through a single-pole on/off switch. But there are ramifications to consider.
When not turning DC motors have a very low electrical resistance, which means that they draw a very large current until they get up to speed. Similarly when working hard to against a heavy drag their cuurent consumption rises steeply. The result may be that the caravan battery voltage drops so low that the microcomputer in the controller can no longer function correctly and the unit will diconnect from the Bluetooth network.
There are two solutions available if you do not have a MotorPac with current ramping:
1. Connect the trailing mains-cable to the caravan's power input before and while you use the ewiks motors. This will greatly reduce the power dips and help to keep the battery from discharging too deeply, especially if you keep the duty cycle low. To power the remote control unit from the main battery connect the bridge as shown on the schematic.
2. Power the remote control unit from a separate, dedicated supply battery such as a 12V gel-cell of the type used in burglar alarm systems. The gel-cell will keep the remote control powered for many hours, but not indefinitely. When the power switch set to Off the main battery (and its charger) will be connected to the secondary battery to keep it float-charged. The schematic details how the 2-pole switch assebly included with the controller should be connected between the batteries and the remote control unit and the switch is supplied with each wire tail labelled.
Basic mover control extension R400
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